CoBuddy vs Solar Pro 4
Solar Pro 4 comes out ahead, 53 to 46 on our weighted score, though CoBuddy is 6% cheaper per token.
BaiduCoBuddy
46/100- ECI—
- Price$0.28 / $1.13
- Context131K
- Our pick
UpstageSolar Pro 4
53/100- ECI—
- Price$0.30 / $1.20
- Context524K
Add a model
Make it a three-way comparison.
Solar Pro 4 is our pick
Solar Pro 4 is the better all-round choice, scoring 53/100 against CoBuddy (46). It leads on inputs & features and context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceCoBuddyCoBuddy $0.492 · Solar Pro 4 $0.525 per 1M tokens (3:1 blend)
- Longest contextSolar Pro 4Solar Pro 4 524,288 · CoBuddy 131,072 tokens
- Widest inputsSame inputsCoBuddy: Text · Solar Pro 4: Text
- Self-hostingNo open weightsBoth are available only through APIs
| Measure | Weight | CoBuddy | Solar Pro 4 |
|---|---|---|---|
| Price | 50% | 62 | 60 |
| Inputs & features | 30% | 35 | 45 |
| Context window | 20% | 25 | 49 |
| Overall | 100% | 46/100 | 53/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | CoBuddyBaidu | Solar Pro 4Upstage |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $0.28 (best) | $0.30 |
| Output | $1.13 (best) | $1.20 |
| Cached input | — | $0.06 |
| Blended (3:1) | $0.492 (best) | $0.525 |
| Long-context rate | Same rate | Same rate |
| Price source | Median of 1 providers | Official Upstage API |
| Limits | ||
| Context window | 131,072 tokens | 524,288 tokens (best) |
| Max output | 65,536 tokens | 131,072 tokens (best) |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | No | No |
| PDFs | No | No |
| Audio | No | No |
| Video | No | No |
| Reasoning | Yes | Yesminimal · low · medium · high · xhigh · max |
| Tool calling | Yes | Yes |
| Structured output | No | Yes |
| Availability | ||
| Weights | Proprietary | Proprietary |
| API model ID | — | solar-pro4 |
| API providers | 1 | 6 (best) |
| Released | May 6, 2026 | Aug 6, 2026 |
| Knowledge cutoff | — | Feb 2026 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- CoBuddy$5.06
- Solar Pro 4$5.40
Which should you choose?
Which is better: CoBuddy or Solar Pro 4?
Solar Pro 4 is the better all-round choice, scoring 53/100 against CoBuddy (46). It leads on inputs & features and context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, CoBuddy or Solar Pro 4?
CoBuddy is cheaper at $0.28 input / $1.13 output per million tokens (median across 1 API provider). Solar Pro 4 costs $0.30 input / $1.20 output per million tokens (official Upstage API price). At a typical mix of three input tokens to one output token, that is $0.492 per million tokens for CoBuddy versus $0.525 for Solar Pro 4 (1.1× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. CoBuddy has not been scored yet and Solar Pro 4 has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for CoBuddy and Solar Pro 4 yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.
Which has the bigger context window?
Solar Pro 4 has the largest context window at 524,288 tokens, against 131,072 for CoBuddy. Maximum output per response: CoBuddy up to 65,536, Solar Pro 4 up to 131,072 tokens.
Which can read images, PDFs, audio or video?
CoBuddy accepts text; Solar Pro 4 accepts text. They handle the same number of input types.
Are any of these open source?
No. CoBuddy and Solar Pro 4 are proprietary and only available through APIs and apps.
Which is newer?
Solar Pro 4 is the newest, released Aug 6, 2026. CoBuddy came out May 6, 2026. Knowledge cutoff: Solar Pro 4 Feb 2026.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Nov 2, 2026.
